Meitantei Conan S13E19 - 物言わぬ航路（後編）

After investigating, it is revealed the culprit took three plane rides to create his alibi. Conan realizes the culprit had no ties to the Black Organization. Mouri after solving wonders how he can give an autographed baseball to his wife but then realizes since the baseballer is dead, the baseball is a collectors item.